CISCO IOS XR 9006 UPGRADE 5.3.2 TO 6.4.2

[gibbskere]

I want to upgrade a 9k with dual rsp, is there way to do this without down time?

is there a way to do that by using the standby RSP as active during the reload?

can you recommend the best way to upgrade 5.3.2 to 6.4.2 any actions that I need to consider before?

[balaji.bandi]

Look at this thread help you : (what you need to be careful of )

https://community.cisco.com/t5/xr-os-and-platforms/ios-xr-upgrade-procedure/td-p/3893555

[gibbskere]

what about upgrading while RSP1 is the active during the process?

[balaji.bandi]

RSP0 will replicated to RSP1 since its standby, if the RSP1 is active, then i would suggest to failover back to RSP0 and do the upgrade.

small downtime 10-20min you can follow standard upgrade process for the entire router to reload in the maintenance window. or 

You can do ISSU upgrade as suggested :

https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r6-4/system-management/configuration/guide/b-system-management-cg-asr9000-64x/b-system-management-cg-asr9000-64x_chapter_010111.html#id_91543

[gibbskere]

thank you for replying

what I need to know is if there is a way to upgrade without down time with the standard upgrade process 

[balaji.bandi]

No you have to reboot the router to get new version.

[tkarnani · Accepted solution]

ISSU is not supported on this version of code

you will each stepped version of upgrade will be a full router reload and will cause downtime in traffic

https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r7-9/system-management/configuration/guide/b-system-management-cg-asr9000-79x/issu-iosxr.html